From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>
Cc: youlin.pei@mediatek.com, anan.sun@mediatek.com,
Nicolas Boichat <drinkcat@chromium.org>,
srv_heupstream@mediatek.com, chao.hao@mediatek.com,
linux-kernel@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
Tomasz Figa <tfiga@google.com>,
iommu@lists.linux-foundation.org,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Greg Kroah-Hartman <gregkh@google.com>,
kernel-team@android.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 5/7] iommu: Allow io_pgtable_tlb ops optional
Date: Wed, 16 Dec 2020 18:36:05 +0800 [thread overview]
Message-ID: <20201216103607.23050-6-yong.wu@mediatek.com> (raw)
In-Reply-To: <20201216103607.23050-1-yong.wu@mediatek.com>
This patch allows io_pgtable_tlb ops could be null since the IOMMU drivers
may use the tlb ops from iommu framework.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
include/linux/io-pgtable.h | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index adde9e49be08..c81796814afa 100644
--- a/include/linux/io-pgtable.h
+++ b/include/linux/io-pgtable.h
@@ -206,14 +206,16 @@ struct io_pgtable {
static inline void io_pgtable_tlb_flush_all(struct io_pgtable *iop)
{
- iop->cfg.tlb->tlb_flush_all(iop->cookie);
+ if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_all)
+ iop->cfg.tlb->tlb_flush_all(iop->cookie);
}
static inline void
io_pgtable_tlb_flush_walk(struct io_pgtable *iop, unsigned long iova,
size_t size, size_t granule)
{
- iop->cfg.tlb->tlb_flush_walk(iova, size, granule, iop->cookie);
+ if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_walk)
+ iop->cfg.tlb->tlb_flush_walk(iova, size, granule, iop->cookie);
}
static inline void
@@ -221,7 +223,7 @@ io_pgtable_tlb_add_page(struct io_pgtable *iop,
struct iommu_iotlb_gather * gather, unsigned long iova,
size_t granule)
{
- if (iop->cfg.tlb->tlb_add_page)
+ if (iop->cfg.tlb && iop->cfg.tlb->tlb_add_page)
iop->cfg.tlb->tlb_add_page(gather, iova, granule, iop->cookie);
}
--
2.18.0
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next prev parent reply other threads:[~2020-12-16 10:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 10:36 [PATCH v3 0/7] MediaTek IOMMU improve tlb flush performance in map/unmap Yong Wu
2020-12-16 10:36 ` [PATCH v3 1/7] iommu: Move iotlb_sync_map out from __iommu_map Yong Wu
2020-12-23 8:51 ` Christoph Hellwig
2020-12-24 11:27 ` Yong Wu
2020-12-16 10:36 ` [PATCH v3 2/7] iommu: Add iova and size as parameters in iotlb_sync_map Yong Wu
2020-12-16 10:36 ` [PATCH v3 3/7] iommu/mediatek: Add iotlb_sync_map to sync whole the iova range Yong Wu
2020-12-16 10:36 ` [PATCH v3 4/7] iommu: Switch gather->end to unsigned long long Yong Wu
2020-12-16 11:03 ` David Laight
2020-12-17 2:26 ` Yong Wu
2020-12-16 12:10 ` Robin Murphy
2020-12-17 2:26 ` Yong Wu
2020-12-16 10:36 ` Yong Wu [this message]
2021-01-18 16:18 ` [PATCH v3 5/7] iommu: Allow io_pgtable_tlb ops optional Robin Murphy
2020-12-16 10:36 ` [PATCH v3 6/7] iommu/mediatek: Gather iova in iommu_unmap to achieve tlb sync once Yong Wu
2020-12-23 8:56 ` Tomasz Figa
2020-12-23 11:00 ` Robin Murphy
2021-01-08 9:56 ` Tomasz Figa
2021-01-08 9:56 ` Tomasz Figa
2021-01-18 16:35 ` Robin Murphy
2021-01-18 16:58 ` Will Deacon
2021-01-18 17:14 ` Robin Murphy
2020-12-16 10:36 ` [PATCH v3 7/7] iommu/mediatek: Remove the tlb-ops for v7s Yong Wu
2021-01-18 16:39 ` Robin Murphy
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